Carl brammlng



c. BRAMMINGI CIRCUIT CONNECTOR.

APPLICATION FILED MAR. 29, NHL RENEWED SEPT. 15, 1919.

1,323,821. Patented De0.2,1919.

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CARL BRAMMING, OF CHICAGO, ILLINOIS, ASSIGNOR TO ACCESSORIESMANUFACTURING CO., A CORPORATION OFIILINOIS, I

cmcmr coiu'mc'roa.

Specification of Letters Patent.

Application filed March 29, 1917, Serial No. 158,465. Renewed September15, 1919. Serial No. 323,998.

'- citizen of the United States, and resident of Chicago, countyof Cook,and State of Illinois, have invented certain new and useful Im rovementsin Ci-rcuit- Connectors, of which the following is a specification andwhich are illustrated in the accompanyin drawings, forming a partthereof.

The invention relates to circuit connectors adapted for use inconnection with a wall, such as the dashboard or cowl of an automobile,and is shown as adapted for use with a gage lamp.

The objects of the invention are to provide a connector of the plug andsocket ty e in which the socket element is to be secure y attached toasupport, such as a wall, and the plug element may be held in two postions within the socket, in one of such positions the circuit beingclosed and in the other being open.

A further object is to provide improved means for holding the plug ineither of its positions, to preventhaim-ful vibration of the plug and alamp carried thereby, while relieving these parts of the jarring actionwhich would be communicated thereto directly from the support as inautomobile service.

A preferred embodiment of the invention is hereinafter described, and isshown in the accompanying drawings in which- Figure 1 is an elevation ofthe connector with a gage lamp and canopy mounted thereon;

Fig. 2 is a longitudinal section of the device; and

Fig. 3 is a detail longitudinal section,

partly in elevation.

The socket element 10 is provided with a wall'plate 11 for conveniencein attaching it to a support, not shown. Within the inner end of thesocket 10 is fixed a connector plug 12, to which the leading-in wires mabe attached and which is provided wit spring-advanced contact plungers13 14, for engagement by the contact ofthe plug element 15.

The plug 15 is preferably of non-conductive material and has fixedwithin it a air of conductors 16, 17 the inner ends of w ich engage theplunger contacts 13, 14, when the plug is fully inserted. Associatedwith the outer ends of the conductors 16, 17, are a plug 15.

pair of plunger contacts 18, 19, adapted to .be engaged bythe base 20.of alamp 21 in the usual manner. The plug 15 is fixed within a shell 22which-projects beyond its Patented Dec. 2, 1919. e

I eing provided withlsuitable,

in the construction illustrated is the inner end of the shell 22 andreacts, either directly or indirectly, against the end of the socket 10.For the-purpose of coverin and protecting the; spring a sleeve 24 slimgly fits upon 1 the shell 22' and preferably is flanged inwardly at itsinner end, as shown at'25, this flange forming a'seat for the inner endof the spring.

The socket 10 is provided with a slot 26' of the bayonet joint type butof special configuration for cooperating with a pairof studs, as 27,projecting laterally from the The slot 26 is substantially U shape, oneend opening through the outer end of the socket 10 and the other end- Ibeing closed and forming a seat for the studs 27 The'bowed portion ofthe slot 26 is recessed in, its inner face to form a shoulder or pocket28 within which the stud 27 coiiperating therewith may enter, therebyholding the plug '15 in' its inner osition.

Preferably the' slot is also rovide with a stop shoulder 29 which wilarrest thestud when shifted from the inner end of the slot, the positionshown in Fig. 3, and aline it with the pocket 28.

When the plug 15 is inserted into the socket 10 the spring 23 iscompressed and will hold the studs 27 firmly against either. of the slotseats. 28 or 29, the latter being the inner end of the slot. The partsare so proportioned that when the studs 27 are seated in the pockets 28the ends of the conductors 16, 17, are in engagement with the contactelements 13, 14, and the circuit is closed. When the plug is shifted topermit the studs 27 to engage the seats 29 these conductors are out ofengagement with the contact elements and the circuit is open.

When the plug is entirely withdrawn from the socket the expansion of thespring 23 will force the flan e 25 against the studs 27 and the latterwi thus prevent the-sleeve and spring from being separated from the lamplug. When thus separated the plug may en the parts are assembled andoccupy the positions shown in Figs. 2 and 3, the

lamp is held against injurious vibration by the-spri 23 but is,nevertheless, ieldingly supporte and thus freed from t e violent jarringaction which would be communicated to it from the vehicle were theattachment rigid.

While the device is shown as adapted for use in connection with a twoline circuit, it is obvious that it may be used with a single lineounded circuit, in which case but one set o contaot elements would berequired.

I claim as my invention 1. In a circult connector, in combination, asocket, a contact element within the socket, a plug adapted to enter thesocket and interlock therewith in two positions, a contact elementcarried by the plu and engageable with the socket contact e ement whenthe plug is in one of its interlocking positions 2. In a circuitconnector, in combination,

a plug and a socket telescopically engagethe slot being oflset inwardlyto form a pocket, a stud projecting from the plug and adapted to enterthe slot, and a spring surrounding the plug and reacting between theplug and socket.

3. In a circuit connector, in combination,

a socket, a plug interfitting the socket and interlocking therewith intwo positions, a shell fixed upon and projecting beyond the outer end ofthe plug and forming a. socket for another plug, and a spring reactingbetween the inner end of the shell and the first named socket.

4:. In a circuit connector, in combination, a socket, a pluginterfitting the socket and interlocking therewith in two positions, ashell fixed upon and projecting beyond the outer end of the plug andforming a socket for another plug, a. sprin reacting between the innerend of the s 1ell and the first named socket, and a sleeve slidablymounted on the shell and inclosing the spring having a shoulder forminga seat for the end of the spring.

. CARL BRAMMING.

